# set terminal pngcairo  background "#ffffff" enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'pm3d.19.png'
set border 4095 front linetype -1 linewidth 1.000
set style line 100  linetype 5 linecolor rgb "#f0e442"  linewidth 0.500 pointtype 5 pointsize default pointinterval 0
set view 50, 220, 1, 1
set samples 30, 30
set isosamples 30, 30
unset surface 
set ticslevel 0
set title "bad: surface and top are too close together" 
set xrange [ -1.00000 : 1.00000 ] noreverse nowriteback
set yrange [ -1.00000 : 1.00000 ] noreverse nowriteback
set zrange [ -15.0000 : 4.00000 ] noreverse nowriteback
set pm3d implicit at st
splot log(x*x*y*y)